Journal ArticleDOI
Untersuchungen an 1,3‐Dicarbonyl‐Verbindungen, 3. Mitt. Untersuchungen an β‐Ketoestern
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TLDR
In this paper, the synthesis of β-keto-amides 6 and 8 is described, and Tautomerism and H-bonding of the 1,3-dicarbonyl-compounds 2, 6, 8 are investigated by spectroscopic methods.Abstract:
Aus dem β-Keto-ester 2b wird mit Thiophenol in PPS das anellierte Thiochromon 3b erhalten. Die Synthese der β-Keto-amide 6 und 8 wird beschrieben. Tautomerie und H-Bruckenbindungen der 1,3-Dicarbonyl-Verbindungen 2, 6 und 8 werden mit spektroskopischen Methoden untersucht.
Investigations on β-Ketoesters
The β-keto-ester 2b gives with thiophenol in PPA the anellated thiochromone 3b. The synthesis of the β-keto-amides 6 and 8 is described. Tautomerism and H-bonding of the 1,3-dicarbonyl-compounds 2, 6 and 8 is investigated by spectroscopic methods.read more
Citations
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Book ChapterDOI
Tautomerism of Heterocycles: Five-Membered Rings with One Heteroatom
Journal ArticleDOI
Synthesis of Indanones via Intramolecular Heck Reaction of Baylis-Hillman Adducts of 2-Iodobenzaldehyde
TL;DR: In this paper, the Baylis-Hillman reaction was used to synthesize 2-Iodobenzaldehyde and 2-Carboalkoxy-and 2-acetyl-1-indanones.
Journal ArticleDOI
Untersuchungen an 1,3‐Dicarbonylverbindungen, 15. Mitt. 4,5‐Dihydro‐5‐alkyl‐4‐oxo‐pyrano[3,2‐b]indole
Klaus Görlitzer,Ekkehard Engler +1 more
TL;DR: In this paper, the 1,3-dicarbonyl compounds have been shown to possess antiallergic activity and antiallergisch wirksamen Sauren 8, die sich zu den Pyrono[3,2-b]indolen 9 decarboxylieren lassen.
Journal ArticleDOI
Selective synthesis of 1-indanones via tandem knoevenagel condensation-cycloalkylation of β-dicarbonyl compounds and aldehydes
Giovanni Sartori,Raimondo Maggi,Franca Bigi,Cecilia Porta,Xiaochun Tao,G. L. Bernardi,Sandra Ianelli,Mario Nardelli +7 more
TL;DR: Aromatic 1,3-dicarbonyl compounds react with not enolizable aldehydes in the presence of C2H5MgBr or AlCl3 affording 2-carbethoxy- and 2-acetyl-1-indanones via tandem Knoevenagel condensation-cycloalkylation process as mentioned in this paper.
Journal ArticleDOI
Untersuchungen an 1,3‐Dicarbonylverbindungen, 6. Mitt. Anellierte Chinolone
TL;DR: The synthesis of substituted 2-benzoyl-3-hydroxy-benzo[b]thiophenes 5 is reported in this article, which cyclisizes to the anellated quinolone 7.
References
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Journal ArticleDOI
Perhydroindan derivatives. XII. 6-Methoxyindanone and its derivatives
Journal ArticleDOI
Über Oxycarbonsäureester des Cumarons, Thionaphthens und Indols und deren Alkylierungsprodukte
Journal ArticleDOI
Anellierte Chromone aus heterocyclischen 1,3-Dicarbonylverbindungen†
TL;DR: In this article, the 1,3-Dicarbonyl verbindungen 2, 6, 9 and 11 sind vollstandig enolisiert; the Enolisierungsrichtung and H-Bruckenbindung wird diskutiert.